#include <iostream>
using namespace std;
int s[101];
int main()
{
int n, m, i, j, num, summax=0, ind;
cin >> n >> m;
for (i=1; i<=n; ++i)
{
for (j=1; j<=m; ++j)
{
cin >> num;
if (num%2==0) s[i]+=num;
}
if (s[i]>summax) { summax=s[i]; ind=i; }
}
cout << ind << endl;
return 0;
}